Improvement in rendering leather impervious to hydrocarbon liquids



waited ates gm 1h al LigIw-m it may concern i Be; it known that I, ALBINWARTH, of Stapleton, in the county of Richmond, and State of New York,have invented a new and improved Process for Renderlng LeatherImpervious to Hydrocarbon Liquids; and I do hereby declare the followingto be a full,

.those skilled in theart to make and use the same.

This inventionconsists in immersing leather in melted beeswax, atatemperature of from 200 to 250, for'a suflicientlylongtime to allow thewax to same is rendered impervious to petroleum, or other hydrocarbon lqiuds,:wliile it remains perfectly pliable, and not liable to becomerancid or rotten, as it does whenfsatnrated with fat.

dncarrying out inyinveutiou, I take a quantity of beeswax, and meltit'in a kettle, of convenient size,

hen the mass has'becomc thoroughly fluid, and

its temperature hasbeen raisedto from 200 to 250 l ahren-heihl introducetherein the leather, which is lowing the same to remain in the melted mmfor such a period that its entire body becomes thoroughly and uniformlysaturated with the was. I

After removing the leather from the wax, I expose Illto pressure bypassing it through between rollers,

then it is ready for use, or it may be used without bcmg pressed. y I llily principal object in treating leather in the manner abovedescribedis to obtain a suitable packing for valvesof petroleum-cans.Ordinary leather is useless for this. purpose, since the petroleumpenetrates through the sameaud the valvecannot be made to clear, andexactdescription thereof, which will enable penetrate the entire body ofthe-leather, whereby the 1 10 be rendered impervioustohydrocarbonliquids,.a

orotherwise, so as to remove all surplus wax, and

ALB IN WARTH, or STAPLETON, NEW YORK.

Letters Patent No. 108,072, dated October 4, 1870.

IMPROVEMENT 1N JRENDERING LEATH'IERIIMPERVIOUS TO HYDROCARBON LIQUIDS. QI I I The Schedule referred to in theseLtters Patent and making part ofthe same close tight. India rubber cannot be used, because it isdestroyed by the petroleum. But by saturating the leather with beeswaxapacking is obtained which is impervious to petrol'nm, or'otlierhydrocarbon liqnids, and I am enabled to produce a cheap and tightvalre.it

Leather prepared according to my invention can, however, be also usedwith advantage formanufacturing shoes, particularly for persons workingin the oil regions, where shoes made of common leather soon becomesaturated with the oil, and can hardly be considered a protection forthe feet.

By the action of the wax the durability of the leather is materiallyincreased, and leather prepared according to my process can he used forbelting for hosc,'1and, in

advantage where it is desirable that leather should resist the actiouof'petroleum.

I do not/claim broadly as my invention the applica tion of beeswax in amelted stateto leather; but

What I claim is-- The within-described process for rendering leatherimpervious .to hydrocarbon liquids, by boiling the same in meltedbeeswax until its entire bodyis permeated by the wax,'as herein setforth.

ALBIN WARTH.

Witnesses:

W. HAUFF, (J. WA LEns.

